Refrigerating and ventilating apparatus



Oct. 7, 1930. c. A. MOORE 1,777,573

REFRIGERATING AND VENTILATING APPARATUS Original Filed Sept. 28 1 925 2 Sheets-Sheet l Oct. 7, 1930. c. A. MOORE Q REFRIGERATING AND VENTILATING APPARATUS Original Filed Sept. 28 1925 2 Sheets-Sheet 2 o a a lnve nrorz CharlesA Moore ooa om fiorngys.

his

Patented Oct. 7, 1 930 1,777,573

NITED STATES" PATENT CHARLES A. IIIOOItTE F EDINA, MINNESOTA BEFRIGEATING AND VENTILATING APPARATUS Application filed September 28, 1925, Serial No. 59,086. Renewed August 2, 1929.

My invention relates to improvements in skirt 17 are wholly-or partially closed, as demeans for refrigerating, dehumidifying and sired, by means of doors 19 frictionally slidventilating rooms or chambers, particularly, able at their ends in upright guides 20 sethough not necessarily, for the storage of cured to said skirt 17 Surmounting the upperishable products. per end of the pipe coil is a sheet metal cap 55 The many and various needs for apparatus 21 having a depending flange 21 thereon, of the present kind give rise to the requirewhich is held'between the outer sides of the ment for compact unitary, factory built apupper turns of the pipe 13 and the inner sides pliances not only capable of being readily of the outer standards 14. Joining each other handled in shipment and easily installed, near the cap 21 and communicating through 60 but adapted to function efficiently and ecosaid cap with the interior of the conduit A nomically. are an upstanding branch pipe 22 and a hori-.

An object of my invention is to provide a zontally extended branch pipe 23,]the forunita-ry refrigerating, dehumidifying and mer being of'a height to fall short of the ceilventilating apparatus for pre-cooling, storing of a chamber in which the apparatus is 65 age and like chambers, the same being siminstalled and the latter sufliciently ion to ple, durable, realtively inexpensive in conreach through the wall of the chamber Into struction and capable of being readily the outer air. Said branch pipes 22 and 23 handled in shipment and easily installed, the are respectively fitted with dampeps 24 and arrangement of parts making for efficiency 25. 70 in operation and economy in the use of the The conduit B comprises a sheet metal refrigerating medium employed. pipe 26, the upper portion thereof passin With the foregoing and other-objects in centrally through'the cap 21. The upper en view, which will appear in the following/of the'pipe 26 falls short of the ceiling 12, said 25 description, the invention resides in the pipe 26 being fitted with a damper 27 near novel combination and arrangement of parts said end thereof. Joining the pipe 26 near and in the details of construction hereinafter the lower end thereof are a pair of opposed described and claimed. horizontal branchpipes 28 and 29, each ex- In the drawings, Fig. 1' is a side elevationtending through the skirt- 17, the latter being 30 al view of an embodiment of my invention fitted with a damper-30 and long enou h to 80 and Fig. 2 is a vertical, central sectional view be projected through a wall'll of the c amthereof. v I ber'X. The branch pipe 28 is closed at its Referring to the drawings, it will be seen outer end by means of a removable 'ca 31 that I have illustrated the floor 10, Wells 11 and the lower end of the pipe 26 is sim' arly and ceiling 12 of a chamber X in which the closed by means of a removable cap 32-. 8

apparatus is placed. Said apparatus com- The conduit .0 comprises a pipe 33 enprises three upright concentric conduits A, circling the inner pipe 26, the lowerend of B and C. The outer conduit A supplies the said pipe 33 terminating at an elevation adframework of the apparatus, the same injacent to the upper sides of the branch pipes eluding a helically coiled'refrigerant pipe 28, 29. Leading downward to the upper end 90 13, the turns thereof being held between a of the pipe 33 is an inclined branch pipe 34 number of paired channel-like standards 14 through which the central, p1pe 26 extends. clamped together by bolts 15, said standards The upper end of said inclmed branch pipe having their footing on a base ring 16 of an- 34 connects with an uprlght branch 35 and gle iron. The lowermost turn of the pipe 13 with a horizontally extended branch 36, said 96 lies considerably above the base ring 16, the branches being respect vely fitted with dampspace between said turn of pipe and rin beers 37 and 38. The upri ht branch 35 termiing occupied by a sheetmetal skirt 1 senates near the ceiling 12of the chamber.

cured to the outer standards 14 and also to The horizontal branch 361s su phed with.

said base ring 16. OpeningsllS cut in the a fan 39 for blowing air from t e'chamber "in the floor of the chambpr, the outwardly turned lower extremity 13 of the refrigerant pipe 13 being connected through a valve 44 with a refrigerant feed line 45 and the similarly turnedupper extremity 13 of the pipe valves 44, 46 open to permit of the circula- 13 connected through a valve 46 with a return line 47 for the refrigerant. With said tiorr of the refrigerant through the pipe 13, the walls of the conduit A formed by the pipe 13 are ultimately rendered solid by the accumulation of frost on the turns of said pipe.

The appliance operates in different ways to meet various needs. Without the use of any of the fans 39, 40 and 42, the air may be circulated in the chamber solely by'gravity' and refrigerated in the process. Under such condition, the dam ers 25 and are closed.

Upon opening the amper 24 and tine or both of the doors 19, the warmest air at the ceiling settles through the conduit A and being re-.

frigerat ed therein flows out of the appliance into the lower portion of the chamber .X, the air entering said conduit at the top thereof being replaced by air rising along the relatively warm walls 11.

Noting that air in the intermediate and central conduits C, B is cooled on account of the proximity thereto of the refrigerant pipe 13 it will be understood that the above noted use of the conduitA may be suppleby the refrigerant in the coiled pipe 13 ofthe outer conduit. By thus providing for the exhaustion of air from the chamber through the inner conduit, the cooling effect of the refrigerant is employed almost entirely in refrigerating air in conduits A and C and causing the circulation thereof in both of said conduits.

When it is desired quickly to increase the temperature in chamber X, the coldest air at the bottom of the chamber may be expelled, under pressure, through pipe 29 upon the removal of either or both of caps 31,32.

By reversing the rotation of fan 39 to create an up draft in conduit C, said fan causes a part of the refrigerated air, near the bottom of conduit A, to be drawn upward into conduit C and forced out into the 'chamber fromthe pipe 36. Thus operating, fan 39 builds up pressure within the chamber and thereby promotes-theexpulsion of air from said chamber through conduit B. Further,

with said fan thus operating, air from the upper portion of the room may be drawn through branch pipe 22 into conduit A,

whence it will be refrigerated and thereafter boosted through conduit C and further refrigerated therein and then delivered back into the chamber at an elevation from which it may descend about the contents of the chamber. And fresh air admitted to conduit A,

through branch pipe 23, may take the same course. conduit A through the two branch plpes 22 mented in the employment of the conduit C and 23 may take that course.

by 1 opening one of the dampers 37 38 also n the employment of the conduit B -y'o ening the damper 27 and removing one or 0th of'the caps 31, 32. The openings 18 in the skirt 17 supplying a way ofegress for air from the outer conduit A, also provided for egress from the appliance ofair feeding intothe lower portion of said outer conduitfrom the lower end of the inner conduit B. To

stimulate the downward flow of air in the conduit A, the fan 40 may be operated.

Under any of the above noted uses of the appllance, air may be admitted to the room and exhausted therefrom by opening the dampers 25 and 30. Ventilation, under refrlgeratlon, acquired by the o emng ofsaid dampers 25, 30 is augmented when both of the caps 31 and 32 are set in place and damper 24 closed. To further augment refri erated ventilation, either or both of the ans 40 and 42 may be started. And to still further augment suchconditionand to forcibly difiuse Changes in the specific form of my invention, as herein disclosed, may be made within the scope of what is claimed withoutdepart ing from the spirit of my invention.

Having described any invention, what I claim as new and desire to protect by Letters Patent is:

- v 1. The combination with a strupture forming a chamber, upright concentric conduits therein, one conduit communlcatlng at its upper end with the upper portion of the cham Also, a mixture'of air admitted, to

cate with the outer atmosphere at the top and v with the chamber at the bottom.

2. The combination with a structure forming a chamber, of three upright concentric conduits therein, the outer conduit communicating at its upper end with the outer air and at its lower end with the lower portion of the chamber, the inner conduit communicating at its upper end with'the upper portion of the chamberand at its lower end with the outer air, the intermediate conduit communicating at its upper end with the upper portion of the chamber and at its lower ends with the lower portion of the chamber, said outer conduit embodying refrigeratin means for cooling the air therein and in sai other conduits, the air in the inner conduits in least degree. v v 3. The combination with a structure forming a chamber, upright concentricconduits therein, one conduit communicating at its upper end with the upper portion of the chamber and at its lower end with'the outer atmosphere, a second conduit communicating at its upper end with the upper portion of the chamber, and at its lower end with the lower portion of the chamber, temperature afl'ecting means comprising a pipe coiled about and spaced from the second conduit, and adapted to be connected to a source of temperature affecting fluid, the space formed between the pipe cdi'l and second conduit being adapted to communicate with the outer atmosphere at the top and with the chamber at the bottom.

4. The combination with a-chamber and means for affecting the temperature therein, of three upright draft conduits, two thereof being arranged within the other, one an ingross conduit communicating at-its upper end with the outer air and atits lower end with i the lower portion of the chamberyanother an egress duct communicating at its upper endwith the upper portion of the chamber and at its lower end with the outer air, and the third conduit communicating at its upper endwith the upper portion of the chamber and conduit for stimulating the flow of air there '50- i at its lower end with the lower portion of the chamber, and a fan associated with said third through. I 5. The combination with a chamber and means'for afiecting the temperaturejtherein, of three upright draft conduits, two thereof being arranged within the other, one an ingress conduitcommunicating at its upper end with-the outer air and at its lower end with the lower portion of the chamber, another an l the third a conduit communicating at its upper end with the upper portion of the chamber and at its lower end with the lower portion ofthe chamber, and a fan associated with one of said conduits for stimulating the natural flow of air therethrough.

"6. The combination with a chamber and,

with the upper portion of the chamber and,

further, in communication at its lower end with the lower portion of the chamber, another conduit being in communication at its upper end with the upper portion of the chamber and at its lower end with the outer air, and the third conduit being in communication at its upper end with the upper portion of the chamber and at its lower end with the lower portion of the chamber.

7. The combination with a chamber and means affecting the temperature therein, of three upright draft conduits, two thereof being arranged within the other, one being in valved communication at its upper end with the outer air, also in valved communication with the upper portion of the chamber and, further, in communication at its lower end with the lower portion of the chamber, another conduit being in communication at its upper end with the upper portion of the chamber and at its lower end with the outer air, and the third conduit being in communication at its upper end with the upper portion of the chamber and at its lower end with the lower portion of the chamber, and a fan associated 8. The combination with a. chamber and means afiectin the temperature therein, of

three upright raft conduits,two thereof be ing arranged within the other, one conduit communicating at its upper end with the outer air and at its lower end with the lower portionof the chamber,another conduit communicating at its upper end with the upper portion ofthe chamber and at its lower portion with the outer air, and a third conduit communicating at its lower end with the lower portion of the chamber, the upper end of said third conduit being in valved communica tion with the upper portion of the chamber at diflerent -elevations therein.

9. The combinationwith a chamber and means afiectin the temperature therein, of three upright raft conduits, two thereof be ing arranged within the other, one conduit communicating at its up er end with the outer air and at its lower en with the lower portion of the chamber, another conduit communicatin at its upper end with the upper portion 0 the chamber and at its lower end with the outer air, and the thirdlconduit opening at its upper end into the upper portion of the chamber and at its lower end intothe lower portion of said chamber, and a blower ing at its upper end with the outer air and at its lower end with the lower portion of the chamber, another conduit communicating at its upper end with the upper portion of the chamber and at its lower end with the outer air, and another conduit opening at its upper end into the upper portion of the chamber and at its lower end with the lower portion of the chamber. s I

11. The combination with a structure forming a chamber, of an upright refrigerated conduit communicating at its upper end with the upper portion of the chamber, a second conduit, within said first conduit, communicating at its lower end with the interior of the first conduit at the lower part .thereoi and at its upper end with the upper portion of said chamber, and means for impelling air through the second conduit from said lower part of the first conduit and into the upper portion of the chamber.

12. The combination with a structure forming a,chamber, of an upright refrigerated conduit communicating at its upper end with the upper portion of the chamber, a second conduit, within said first conduit, communicating at its lower end with the interior of the first conduit at the lower part thereof and at its upper end with the upper portion of said chamber at a level bene'ath the level of communication between said first I I conduit and chamber, and means for impelterior of the lin air through the second conduit from sai lower part of the first conduit and into the upper portion of the chamber.

13. Thecombination with a structure forming a chamber, of an upright refrigerated conduit communicating at its upper end thereof, said second condiiit including a horizontal branch at the upper part thereof in communication with the upper portion of the chamber, at a level beneath the level of communication between said first conduit and chamber, and means for impelling air part of the first conduit and into the upper portion of the chamber.

15. The combination with a structure forming a chamber, of an upright refrigerated conduit in valved communication at its upper end with the upper portion of the chamber and with'the outer atmosphere, a

ond conduit, within said first conduit, communicating at its lower end with theinterior of the first conduit at the lower part thereof and at its upper end with the upper portion of said chamber, meansof egress forfair from the chamber, and means for. impelling air through the second conduit from said lower part of the first conduit and into the upper portion of the chamber.

In testimony whereof, I have signed my name to this specification.

' CHARLES A. MOORE.

through the second conduit from said lower a with the upper portion of the chamber, a second conduit, within said first conduit, communicating at its lower end with the interior of the first conduit at the lower part thereof, said second conduit including a horizontal branch in communication with the u per portion of the chamber, and means for impelling air through the secondconduit from said lower part of the first conduit and into the upper portion ofthechamberi 14. The combination with a structure forming a chamber, of an upright refrigerated conduit communicatin at its upper end with. the upper portion 0 the chamber, a.

second conduit, within said first conduit,

communicatintgrsa', its lower end withthe inconduit at the lower part 

